File photo of Minister Mikhail Mishustin

Russian Prime Minister Mikhail Mishustin has signed an order to nullify the Russian-U.S. memorandum of understanding (MOU) on "open ground" that facilitated travels for diplomats in their host country.

Mishustin asked the Russian Foreign Ministry to inform the U.S. side of the termination, according to the order published on Thursday on the country's official legal information website.